Hmm. . . The only clue I see is the chain-strap bag in the top photo. Very Chanel. Actually, the hat, the LBD- the whole top photo is very Chanel. The bottom one though- all bleached out and '70s and Polaroidy- kind of Prada-esque. My guess would be. . . Chanel

Miss Katie, who shops at the same second-hand dive that I do, has demonstrated a detailed and useless knowledge of high-end design that rivals my own. Congrats, Katie, you are correct. This is Chanel going out on a limb.